CN105473192A - Filtering face-piece respirator having darted mask body - Google Patents
Filtering face-piece respirator having darted mask body Download PDFInfo
- Publication number
- CN105473192A CN105473192A CN201480046721.4A CN201480046721A CN105473192A CN 105473192 A CN105473192 A CN 105473192A CN 201480046721 A CN201480046721 A CN 201480046721A CN 105473192 A CN105473192 A CN 105473192A
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- China
- Prior art keywords
- mask body
- flange
- fixed part
- filtering face
- filtration
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B7/00—Respiratory apparatus
- A62B7/10—Respiratory apparatus with filter elements
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
- A41D13/1115—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a horizontal pleated pocket
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1107—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
- A41D13/1138—Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a cup configuration
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
- A41D13/1161—Means for fastening to the user's head
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/02—Masks
- A62B18/025—Halfmasks
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
- A62B18/084—Means for fastening gas-masks to heads or helmets
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/02—Filters for breathing-protection purposes for respirators
- A62B23/025—Filters for breathing-protection purposes for respirators the filter having substantially the shape of a mask
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/496—Multiperforated metal article making
- Y10T29/49604—Filter
Abstract
The invention discloses a cup-shaped filtering face-piece respirator 10 that includes a harness 14 and a mask body 12 that has a multi-layer filtering structure 16. The mask body 12 includes at least one dart 60 permanently bonded in the filtering structure 16, the dart 60 tapering from a center plane 32 of the mask body 12 to a side edge of the mask body. The dart 60 inhibits collapse of the cup-shaped form of the respirator 10.
Description
The present invention relates to a kind of filtering face-piece respirator, it comprises in mask body for suppressing the province of collapsing of mask body to be stitched.
Background technology
Respirator is worn on the respiration channel of people due at least one in two kinds of common objects usually: (1) prevents impurity or pollutant from entering the respiratory system of wearer; And (2) prevent other people or thing to be exposed to the pathogen of wearer's exhalation with under other pollutant.In a first scenario, in atmosphere such as, containing wearing respirator in the environment of the particle that wearer is harmful to, in automobile body repair shop.In the latter case, in the environment other people or thing being existed to pollution risk, respirator is worn, such as, in operating room or toilet.
Design various respiratory device to meet the needs of any one (or both) in these two kinds of purposes.Some respirators are classified as " filtering face ", because mask body itself is used as strobe utility.With combination can attachment filter cylinder (see, such as authorize the United States Patent (USP) RE39 of the people such as Yuschak, 493) or insert-molding filter element (see, such as authorize the United States Patent (USP) 4 of Braun, 790,306) use the respirator of rubber or elastomer mask body different, filtering face-piece respirator is designed to make filter medium cover the major part of whole mask body, thus without the need to installing or changing filter cylinder.These filtering face-piece respirators one of to have in following two kinds of configurations usually: molded respirator and flat-fold respirator.
Molded filtering face-piece respirator comprises the non-woven webs of open-work plastic wire or thermal bonding fibre usually, to provide its cup-shaped configuration to mask body.Molded respirator is using and is often keeping identical shape during storing both.Therefore, these respirators cannot be folded into flat for storage and transport.The example of the patent of open molded filtering face-piece respirator comprises following United States Patent (USP): authorize the people's such as Kronzer 7,131,442; Authorize the people's such as Angadjivand 6,923,182,6,041,782; Authorize the people's such as Dyrud 4,807,619; And authorize 4 of Berg, 536,440.
As its name suggests, flat-fold respirator can be folded into flat for transport and storage.This respirator also deployable cup-shaped configuration in use.The example of flat-fold respirator is shown in following United States Patent (USP): authorize the people's such as Bostock 6,568,392 and 6,484, and 722 and authorize 6,394,090 of Chen.Some flat-fold respirators have been designed bonding wire, seam and folding part, to contribute to keeping its cup-shaped configuration during use.In addition, rigid member has been incorporated in the panel of mask body (see, authorize the U.S. Patent Application Publication 2001/0067700 of the people such as Duffy, authorize the U.S. Patent Application Publication 2010/0154805 of the people such as Duffy, and authorize the S Design Patent 659,821 of the people such as Spoo).
As mentioned below, the invention provides a kind of structure being configured for the alternative of the filtering face-piece respirator keeping its cup-like shape.
Summary of the invention
The invention provides a kind of filtering face-piece respirator comprising the mask body formed by filtration.Mask body is included in mask body and is permanently formed for suppressing respirator from province's seam that its cup-like shape is collapsed, and this province stitches laterally extending across mask body and is tapered in its each end.By fixed part such as solder joint, province's seam is locked in its end, this fixed part has certain distance apart from the periphery of mask body.Is available, breathable filtration between fixed part and the periphery of mask body.
When mask body is in the cup-shaped configuration opened, economize the integrality that seam adds mask body, thus inhibit collapsing of the mask body caused owing to such as causing the pressure drop on mask body to increase by foul atmosphere or humid air.The hermetic terminal economizing seam permanently locks the position of province's seam, and the flexible central portion simultaneously economizing seam allows mask body fully to suit the face of wearer.In addition, the flexible central portion permission mask body economizing seam has enough pliabilities and moves with the head and face that adapt to wearer.
nomenclature
Term described below has the implication defined as follows:
" comprising " or " including " means its definition as the standard in patent term, is the open-ended term with " comprising ", " having " or " containing " synonym in general.Although " comprise ", " comprising ", " having " and " containing " and they be modified to conventional open-ended term, but the present invention also can use compared with narrow sense term (such as " and substantially by ... composition ") suitably describe, be semi open model term compared with the term of narrow sense, reason is that it only gets rid of those things or the element that the performance that may play its expectation function to respirator of the present invention has illeffects;
" clean air " refers to the atmospheric ambient air of the certain volume of filtering pollutant;
" pollutant " means particle (comprising dust, mist and smog) and/or usually can not be regarded as particle but aerial other material (such as, organic vapor etc.) that may suspend;
" lateral dimension " is when observing respirator from front, across the size that whole respirator is laterally extending from side to opposite side;
" cup-shaped configuration " and modification thereof mean fully to cover the nose of people and any Container Type shape of oral area;
" economize seam " means the double-wedge region in the filtration of mask body, and this region has two fixing opposed ends and central area has towards the tapered adjustable width of anchor portion;
The gas that " exterior gas space " means to breathe out is passing and the ambient air gas compartment entered after leaving mask body and/or outlet valve;
The surface being exposed to the ambient air gas compartment of mask body when " outer surface " means on the face that mask body is positioned in people;
" filtering face " means the air that mask body itself is designed to be filtered through it; Do not exist for and reach this object and be attached to mask body or the filter cylinder that can identify separately that is molded in mask body or insert-molding filter element;
" filter " or " filter course " means one or more breathable material layer, and this layer is suitable for the main purpose removing pollutant (such as particle) from the air stream through it;
" filter medium " means the structure of breathing freely, and this structure is designed to remove the pollutant through in its air;
" filtration " and " breathable filtration " means the roughly ventilative structure of filtered air separately;
" inwardly fold " part meant towards being extended by it to bend backward;
" band tool " means to contribute to mask body being supported on the structure on the face of wearer or component combination;
" internal gas space " refers to the space between mask body and human face;
" interior surface " means the surface near human face of the mask body when mask body is positioned on human face;
" line of demarcation " means folding part, seam, bonding wire, joint line, suture, hinge lines and/or their any combination;
" mask body " means the structure of breathing freely, above its nose being designed to be fitted in people and oral area, and contribute to limiting the internal gas space (comprising the seam of its layer together with components bonding and joint line) of separating with exterior gas space;
" nose clip " means mechanical device (instead of nose foam), and this device is suitable for using on mask body, to improve at least around the sealing of the nose of wearer;
" periphery " means the outward flange of mask body, and when people wears respirator, the face that this outward flange can be close to wearer is usually arranged; " periphery section " is a part for periphery;
" pleats " mean the part be designed to or the part be folded back on itself;
" polymer " and " plastics " means material separately, and this material mainly comprises one or more polymer, and also can comprise other composition;
" respirator " means the air filter that people wears, in order to provide clean breathe air to wearer; And
" laterally extending " means to extend on lateral dimension substantially.
Accompanying drawing explanation
Fig. 1 is the front perspective view that filtering face-piece respirator 10 is worn on when human face goes up, and respirator 10 has province's seam 60;
Fig. 2 is the side view of the respirator 10 of Fig. 1;
Fig. 3 is the sectional view of the filtration 16 of the respirator 10 being applicable to Fig. 1 and Fig. 2;
Fig. 4 is the top plan view of the mask body 12 in collapsed configuration before bonding economizes seam;
Fig. 5 is the sectional view of the pleats 50 intercepted along the line 5-5 of Fig. 4;
Fig. 6 is the top plan view of the mask body 12 in the Fig. 4 of the cup-shaped configuration partially opened before bonding economizes seam;
Fig. 7 is the side view of the mask body 12 of Fig. 6;
Fig. 8 is the side view of the mask body 12 in the cup-shaped configuration opened completely, and this mask body 12 has province's seam 60 and second optional province's seam 70;
Fig. 9 is the sectional view of the pleats 50 intercepted along the line 9-9 of Fig. 8;
Figure 10 is the illustrative process of the mask body 12 for the formation of Fig. 4, and this mask body 12 may be molded to the respirator 10 with province's seam 60.
Detailed description of the invention
When putting into practice of the present invention, the filtering face-piece respirator provided has permanent province seam in the mask body of respirator.When the cup-shaped shape of mask body, by filtration is pleating and then sealing or bonding pleats and formed province seam inhibit respirator collapsing from its final cup-like shape.
In the following description, with reference to the accompanying drawing forming the part illustrated, and the mode illustrated by way of example in the accompanying drawings shows various specific embodiment.Except as otherwise noted, otherwise the like of the various element of an embodiment as herein described and drawing reference numeral and another embodiment as herein described and drawing reference numeral are consistent and identical.Should be appreciated that and can to imagine under the prerequisite not departing from the scope of the invention or essence and to implement other embodiment.Therefore, the following description is not considered to have restrictive, sense.Although the present invention is not limited thereto, but by obtaining the understanding to various aspects of the present invention to the discussion of example provided below.
Turn to accompanying drawing, Fig. 1 and Fig. 2 shows the example of filtering face-piece respirator 10, and this filtering face-piece respirator 10 can be combined with the present invention and use to provide clean breathe air to wearer.Filtering face-piece respirator 10 comprises mask body 12 and band tool 14.In this use configuration, mask body 12 has the cup-like shape of suitable rigidity.Unless applied artificial power (such as, pressure) thereon, otherwise mask body 12 keeps this cup-like shape and suppresses to deform from this shape.
Mask body 12 has filtration 16, and the air of suction had to pass through this filtration 16 before entering the respiratory system of wearer.The pollutant from surrounding environment removed by filtration 16, breathes clean air to make wearer.Filtration 16 can present multiple different shape and configuration, and is usually adjusted on the face that it suitably fitted be resisted against wearer or in supporting construction.In general, the shape of filtration 16 and configuration correspond to the general shape of mask body 12.
The filtration 16 used in mask body 12 can be granule capturing type filter or gas and vapor type filter.Filtration 16 also can be the barrier layer stoping liquid to transfer to opposite side from the side of filter course, to stop such as liquid aersol or liquid splash thing (such as, blood) permeatable filter layer.According to application demand, the similar or different filter medium of multilayer can be used to construct filtration 16.The filter course that advantageously can utilize in layered mask body has low pressure drop (such as, being less than about 195 to 295 Pascals under the face velocity of 13.8 cels) usually, to minimize the work of breathing of face mask wearer.In addition, filter course can be flexible and can have enough shear strengths, makes them under the service condition of expection, roughly keep its structure.
Mask body 12 comprises the top section 18 and base section 20 that are separated by line of demarcation 22.In this specific embodiment, line of demarcation 22 is across folding part laterally extending from side to opposite side, the middle part of mask body or pleats.Mask body 12 also comprises the periphery 24 limiting periphery edge 25.
Have with tool 14 top section 18 being fixed to mask body 12 first on band 26 and second time band 27.Band 26,27 is fixed to mask body 12 by nail 29.Band 26,27 can be made of a variety of materials, and such as thermoset rubber, thermoplastic elastomer (TPE), braiding or knitting yarn and/or building rubber compound, to be non-resiliently woven into point etc.Preferably can be elongated to the twice that is greater than its total length with 26,27 and recover its relaxed state.Length with 26,27 also may be increased to three times or four times of its relaxed state length, and can return to its original state when removing tension force and can not have any damage to it.Can be continuous print band with 26,27 or the multiple parts be bonded together by other securing member or clasp can be had.Alternatively, band can form the ring placed around wearer ear.
On the top section 18 that nose clip 35 (Fig. 2) can be arranged on mask body 12 adjacent to periphery 24 or wherein, locate between two parties between mask body lateral edges, to contribute to realizing the suitable laminating on nose and upper cheekbone and around it.Nose clip 35 can be made up of pliable and tough metal or plastics, so as wearer can manual adjustments to its nasal contours of fitting.Nose clip 35 can comprise such as malleable or pliable and tough soft metal (such as aluminium) band, thus can be configured as and make face shield above the nose of wearer and nose and cheek intersection keep the pertinent relation expected.
According to the present invention, respirator 10 comprises the permanent province seam 60 in filtration 16.By fixed part 55 (such as, solder joint) laterally extending pleats closed or be locked in each end and making these pleats produce province's seam 60 when the center of mask body 12 is opened.Therefore, economize seam 60 be tapered from the central area of mask body 12 towards the both direction of the lateral edges of mask body 12.Fixed part 55 is locked in the position of fixed part 55 by economizing the structure of seam 60 and size, thus two edge closures that inhibit province to stitch 60 from it and the cup-like shape that thereby inhibiting mask body 12 collapse.Hereafter be described relative to Fig. 4 to Fig. 9 about the details economizing seam 60 and its method of formation.
Respirator 10 comprises the further feature portion do not explicitly not pointed out with reference to figure 1 or Fig. 2, such as side flange, and one in these flanges visible in fig. 1 and 2, but hereafter discuss relative to Fig. 4.The U.S. Patent application 13/727 that the title submitted on December 27th, 2012 is " FilteringFace-PieceRespiratorHavingFoldedFlange (having the filtering face-piece respirator of fold flanges) " is found in about respirator 10 and the flange of mask body 12 and the other details in further feature portion, in 923, its whole disclosure is incorporated herein by reference.
Fig. 3 shows the exemplary filtration 16 with multilayer such as interior covering fleece 38, outer covering fleece 40 and filter course 42 of mask body 12.Filtration 16 also can have near at least one in layer 38,40 or 42 or many persons, and the juxtaposed structure of outer surface usually near outer covering fleece 40 is knotted or mesh sheet, and this contributes to providing cup-shaped configuration.Filtration 16 also can have one or more level and/or vertical line of demarcation (such as pleats, folding part or rib) that contribute to its structural intergrity.
The interior covering fleece 38 of the interior surface of usual restriction mask body 12 can be used for the smooth surface being provided for contacting wearer's face, and the outer covering fleece 40 usually limiting the outer surface of mask body 12 can be used for catching the loose fiber in mask body or acquisition aesthetic.Cover fleece 38,40 and all protect filter course 42.Covering fleece 38,40 will provide any substance to filter benefit to filtration 16 usually, but the outer prefilter covering fleece 40 and can serve as filter course 42.
In order to obtain the comfortableness of suitable degree, interior covering fleece 38 preferably has relatively little basic weight, and by relatively thin fiber, usually thinner than those fibers of outer covering fleece 40 processbearing astrocyte.Any one in covering fleece 38,40 or both can be made and have about 5 to about 70g/m
2(typical case is 17 to 51g/m about
2, and 34 to 51g/m in certain embodiments
2) basic weight, and fiber can be less than 3.5 Denier (typical case is less than 2 Denier, and more typical be less than 1 Denier) but be greater than 0.1.Usually there are about 5 to 24 microns, typical case about 7 to 18 microns, and the fiber diameter of more typical about 8 to 12 microns at the fiber covering use in fleece 38,40.Cover web material and can have elasticity to a certain degree (when rupturing usually but not necessarily 100% to 200%), and plastically deformable.
Usually, cover fleece 38,40 and be made up of selected non-woven material, these materials, especially in the side that filtration contacts with wearer's face, cover namely on fleece 38 and provide comfort.Being applicable to cover fibroreticulate material can be blown micro fiber (BMF) material, particularly polyolefin BMF materials, such as polypropylene BMF material (comprise polypropylene blend, also comprise polypropylene and poly blend).Also spun-bonded fibre can be used.
Common covering fleece or can comprise 50 % by weight or more polyacrylic polypropylene/polyolefin blends and makes by polypropylene.The polyolefine material being suitable for using in a cover web can comprise such as single polypropylene, two kinds of polyacrylic blends and polypropylene and poly blend, polypropylene and the poly-blend of (4-methyl-1-pentene) and/or the blend of polypropylene and polybutene.Cover fleece 38,40 and preferably there is little fiber outstanding from web surface after the treatment, therefore there is level and smooth outer surface.
Usually filter course 42 is selected to the filter effect realizing expecting.In general, filter course 42 will remove particle and/or other pollutant of high percentage from the air-flow through it.For fibrous filter layer, selected fiber depends on substance classes to be filtered.
Filter course 42 can have various shape and form and usually have about 0.2 millimeter (mm) to 5mm, more typical about 0.3mm to 3mm (such as, about 0.5mm) thickness, and this filter course can be the fleece of general plane, or it can be undulatory to provide the surface area of expansion.Filter course also can comprise the multiple filter courses be bonded together by adhesive or any alternate manner.Known (or developing afterwards) can be used as filtering material for the formation of substantially any suitable material of filter course.The fleece of meltblown fibers is particularly useful especially when being the form of forever charged (electret).It is suitable that the fiber of charged fibrillation film and the fleece of rosin wool fiber and the fleece of glass fibre or solution blown fiber net or electrostatic spraying fleece (form particularly in mems thin film) also can be.In addition, in fiber, additive can be comprised, to strengthen the fibroreticulate strainability prepared by water mise-a-la-masse method.Particularly, fluorine atom can be arranged on the fiber surface place in filter course, to improve the strainability in mist environment.
The example of particle catcher/filter comprises one or more fleeces of fine inorganic fibers (such as glass fibre) or polymer synthetic fiber.The fleece of synthetic fibers can comprise by the such as molten polymer microfibers blowing the standby electret charged of legal system.The Polyolefin microfibers formed by charged polypropylene is specially adapted to micro particle catching application.The filter course of alternative can have for removing absorbent component that is harmful or offensive gases from breathe air.Adsorbent can comprise and is bonded in powder in filter course or particle by adhesive, adhesive or fibre structure.Adsorbent layer is formed by coated substrate such as fiber or reticulated polymer foam, to form thin adhesion layer.Sorbent material can comprise through or without chemically treated active carbon, Woelm Alumina-silica catalyst substrates and alumina particle.
Although filtration 16 is shown having a filter course 42 and two covering fleeces 38,40 in figure 3, filtration 16 can comprise the combination of multiple filter course 42 or filter course 42.Such as, prefilter can be set in fineness and selective larger downstream filter layer upstream.In addition, can sorptive material such as active carbon be set between the fiber comprising filtration and/or multilayer.Independent particle filter layer can also be used, with filter particulates and steam in conjunction with adsorbent layer.
During use respirator, the air entered across-layer 40,42 and 38 successively before entering face masks.Then, wearer can air in the internal gas space of inhaling face shield main body.When the wearer breathes out, air is along contrary direction successively across-layer 38,42 and 40.Alternatively, outlet valve (not shown) can be provided on mask body 12 to be entered exterior gas space by rapid purging not pass filtration 16 from internal gas space to allow the air of breathing out.By fast except the damp-heat air of breathing out from face masks, use outlet valve can improve the comfort level of wearer.There is provided suitable pressure drop substantially any outlet valve that can suitably be fixed on mask body can use in conjunction with the present invention, with rapidly by the exhalation air delivery from internal gas space to exterior gas space.
Turn to Fig. 4 now, Fig. 4 show from respirator 10 before there is the province's seam be formed at wherein in mask body 12 that is folding or collapsed configuration, wherein there is the other features pointed out in this configuration.In this flat collapsed configuration, see multiple features such as line of demarcation 22 and the first flange 30a at contrary 31a, 31b place, side of mask body 12 and the second flange 30b.
Mask body 12 is halved to limit the first side 31a and the second side 31b by central plane 32.Easily can see and lay respectively at the first flange 30a on contrary side 31a and 31b of mask body 12 and the second flange 30b.Flange 30a, 30b extend with the filtration 16 of the mode of general plane at the 36a place, line of demarcation of side 31a and 36b place, line of demarcation away from mask body 12.Flange 30a, 30b can be the extensions of filtration 16, or they can be made up of independent material such as rigidity or semirigid plastic.Although flange 30a, 30b can comprise, to comprise in mask body multiple filtration structure 16 one or more or whole, and flange 30a, 30b are not the main filtration area parts of mask body 12.
Be different from filtration 16, the layer comprising flange 30a, 30b can compress, thus makes them can pass through fluid hardly.Flange 30a, 30b can have solder joint or binding site 34 thereon to increase flange stiffness, and mask body perimeter 24 also can have a series of binding site or solder joint 34 each face mask main body 12 to be bonded together and to keep the position of nose clip 35.The remainder inside by periphery 24 of filtration 16 can and preferably on its most of extensional surface for fluid can permeate completely, but possible exception part is the region that there is binding site, solder joint or broken line.
Respirator of the present invention is included at least one the permanent province seam 60 formed in mask body 12, economizes seam 60 laterally extending to opposite side 31b through central plane 32 from the side 31a of face shield across mask body 12.
(such as, seal, welding or alternate manner bonding) retains center simultaneously and opens and formed in the position near its end by the pleats partially opened being fixed to economize seam 60.Three layers of pleats are locked onto double-wedge and economize in seam configuration by fixed part 55.According to the present invention, the periphery edge 25 that fixed part 55 is formed as apart from mask body 12 has certain distance, allows mask body 12 to adapt to the face of wearer better to reduce mask body 12 in the rigidity at its periphery 24 place.In addition, fixed part 55 is made to have certain distance to provide available filtration on arbitrary cross side of fixed part 55 apart from periphery edge 25.
Fig. 4 to Fig. 9 shows the various configurations of the mask body 12 when forming province's seam 60.It should be noted that each element of the mask body 12 of these five accompanying drawings is interchangeable in these figures, although and features may not explicitly point out in concrete figure, unless contrary with concrete figure, otherwise element be exist.
In the diagram, there are in mask body 12 that is folding or collapsed configuration the pleats 50 of the line of demarcation 36b extending to 31b place, side from the line of demarcation 36a of side 31a.Pleats 50 are locking at these lines 36a, 36b place, but pleats 50 are opened close to can be during central plane 32 at it.Fig. 5 shows the features (these features also can be seen in the diagram) of pleats 50, comprises the line 53 of the position that outer folding part 52 and interior folding part 54 and outer folding part 52 stop relative to filtration 16.In the configuration of Fig. 4, because the whole length of pleats 50 is all in the state do not opened, beyond institute, folding part 52 is stacked with line 53.
Fig. 6 shows the mask body 12 in partially opening configuration from front portion, wherein top section 18 separates at least a little with base section 20; Partially open in configuration at this, mask body 12 starts to present cup-shaped configuration.As can be seen, pleats 50 are opened at least in part, thus outer folding part 52 and line 53 are separated and expose interior folding part 54.Outer folding part 52 and line 53 are relative to each other locked in 36a, 36b place, line of demarcation, but the distance between folding part 52 and line 53 increases towards central plane 32, thus two regions are reduced gradually towards line of demarcation 36a, 36b and flange 30a, 30b from central plane 32.At this one-phase, these wedge areas can be made to collapse to make together with outer folding part 52 gets back to again with line 53.
Fig. 7 shows the mask body 12 in opening configuration completely from its side, and its flange 30b (with the flange 30a do not seen) is folded into and contacts with filtration 16.Easily can identify the cup-shaped configuration of the mask body 12 formed by top section 18 and base section 20.Pleats 50 are opened at least in part, and outer folding part 52 is separated with line 53, thus expose interior folding part 54 and form two wedge areas extended towards line of demarcation.
In fig. 8, define fixed part 55 across pleats (that is, across outer folding part 52 and line 53 and thus across interior folding part 54), thus produce province's seam 60 of bonding.Three of filtration 16 individual courses lock together by fixed part 55, and set certain distance between folding part 52 and line 53 outside.The pleats that Fig. 9 shows fixing three layer filtration structure 16 and partially opens, wherein folding part 52 is not aimed at line 53 but is offset with line 53.
Fixed part 55 can be applicable to keep relative to line 53 or fixing outer folding part 52, or is applicable to any mechanism of maintenance or fixing three layer filtration structure 16.The example of fixed mechanism comprises such as adhesive, machanical fastener or attachment (such as, nail, sutures, rivet) or welding (such as ultra-sonic welded and/or thermal weld (it comprises heat and pressure)).
Fixed part 55 is positioned in the position having certain distance apart from the periphery 24 of mask body 12 and edge 25 along pleats.The parts of pleats is present between fixed part 55 and periphery 24 and edge 25, and in illustrative embodiment, is present between the 36b of line of demarcation.Do not fix or blow-by by making a part for the length of pleats, the hardness of mask body 12 when the hardness at periphery 24 place of its contact wearer's face and rigidity are less than fixed part 55 at periphery 24 place and rigidity, this part ascribe available (such as, the breathable) filtration 16 on the either side of fixed part 55 to.Compared with the situation of fixed part 55 at periphery 24 place, this provide better laminating and the sealing of mask body 12 pairs of wearer's face.This fixed part 55 and periphery 24, the distance particularly between periphery edge 25 is at least 10mm (1cm) and in certain embodiments for 25mm (2.5cm).
In the mask body 12 of Fig. 8, the second bonding is economized seam 70 and is shown in below the line of demarcation 22 in base section 20.This second province seam 70 extends to another line of demarcation 36a (Fig. 6) from line of demarcation 36b through central plane 32 (Fig. 6).Second province's seam 70 also add the intensity of mask body 12 and suppresses it to collapse.Although show two province's seams 60,70 in a particular embodiment, other embodiment can comprise three or more province's seams, and it is laterally extending across mask body 12 separately that these economize seam.
Figure 10 shows the illustrative methods for the formation of mask body 12, and this mask body 12 can be shaped to subsequently has the filtering face-piece respirator 10 that at least one bonding economizes seam 60.Particularly, the method shown in Figure 10 forms the mask body 12 of Fig. 4, forms bonding after this and economizes the method for seam 60 as described in above reference diagram 4 and Fig. 6 to Fig. 8.Mask body 12 assembling in twice operation (mask body preparation and face shield finishing).Mask body preparatory phase comprises: the fleece of (a) lamination and fixing non woven fibre is to form filtration; B () forms multiple pleats crease line; C () forms each calmodulin binding domain CaM in filtration, comprise sealing athwartship plane shroud rim; And (d) cuts final formation, the order that these stages can be different or combination have come.Face shield finishing operation comprises (a) and forms cup-shaped structure, and (b), by folding for flange with contact filtration structure, (c) is formed and bond and economize seam, and (d) attachment strip tool (such as, being with).The method can be regarded as continuous processing at least partially but not batch technology; Such as, mask body is prepared by longitudinally continuous print technique.
With reference to Figure 10, by three independent material piece, cover namely fleece 38, outer covering fleece 40 and filter course 42 put together and to its carry out face-to-face plying with the development length forming filtration 16.These materials are such as laminated together by adhesive, thermal weld or ultra-sonic welded and cut into desired size.Solder joint or binding site 34 can be formed on the development length of filtration 16.
Then by folding for filtration 16 lamilated body and/or pleating and prepare each seal point and binding site to form each features on flat mask body 12, such as line of demarcation 22 and flange 30a, 30b.In certain embodiments, after formation line of demarcation 22 and/or other folding part, pleats and each seal point and binding site, filtration 16 is cut into desired size, and this size is generally the length being applicable to single face shield.
Then, bonding can be formed as mentioned above in mask body 12 and economize seam 60.
Band 26,27 (Fig. 1) can be added to mask body 12 in either phase, such as, add to as the flat face shield in Fig. 4, add to as the cup-like shape partially opened in Fig. 6, add to as the cup-like shape opened completely in Fig. 7 or add to as the flange with bonding in Fig. 8 and the cup-like shape opened completely economizing seam 60.
Under the prerequisite not departing from the spirit and scope of the invention, various amendment and change can be carried out to the present invention.Such as, the concavo-convex molding technique known can be used by filtration to be molded into the face shield with the alternative economizing seam as described herein.Can the FX place of certain distance be had to be sealed to self at the periphery apart from face shield pleats laterally extending on face shield, to form province's seam.The FX of gained has breathable material by arbitrary cross side in this region.
Therefore, the present invention is not limited to above-described embodiment, but the constraint of the restriction proposed by following claims and any equivalent thereof.
The present invention also can when do not exist herein not specifically described any element suitably implement.
All patents cited above and patent application, be included in background technology chapters and sections those, be all incorporated into herein with way of reference.When the disclosure in the file that this type of is incorporated to exist between above-mentioned description conflict or difference time, description should be stated above and be as the criterion.
Claims (16)
1. a filtering face-piece respirator, described filtering face-piece respirator comprises:
(a) band tool; With
(b) mask body, described mask body comprises filtration and has first side edge, contrary second side edge and periphery, described filtration is folded into three layers of pleats in described first side edge and described second side edge place, and is being sealed to self apart from the position of described periphery certain distance to produce laterally extending province's seam.
2. filtering face-piece respirator according to claim 1, wherein said pleats are at least being sealed to self in 5mm place apart from described periphery.
3. filtering face-piece respirator according to claim 1, wherein said pleats are sealed by welding region.
4. filtering face-piece respirator according to claim 1, described mask body also comprises the first flange and the second flange that are positioned at the first side and the second contrary side, when described mask body is configuration in use, described first flange is folded inwards to contact described filtration with described second flange separately, and wherein said laterally extending province seam extends to described second flange from described first flange.
5. filtering face-piece respirator according to claim 1, described mask body has the line of demarcation described mask body being divided into top section and base section, and described laterally extending province seam is arranged in described top section.
6. filtering face-piece respirator according to claim 1, described filtering face-piece respirator also comprises the second laterally extending province seam being arranged in described base section.
7. a filtering face-piece respirator, described filtering face-piece respirator comprises:
(a) band tool; With
(b) mask body, described mask body comprises filtration and has the first side, the second contrary side, central plane and periphery, described mask body has the province's seam extending transverse to described second side from described first side, the first fixed part of being included on described first side and the second fixed part on described second side stitch in described province, wherein between described first fixed part and described first side and between described second fixed part and described second side, there is breathable filtration.
8. filtering face-piece respirator according to claim 7, described mask body also comprises the first flange and the second flange that lay respectively at described first side and described second side, described first flange is folded inwards to contact described filtration with described second flange separately, wherein said laterally extending province seam extends to described second flange from described first flange, and wherein between described first fixed part and described first flange and between described second fixed part and described second flange, there is breathable filtration.
9. filtering face-piece respirator according to claim 8, wherein said first fixed part and described second fixed part are separately apart from described periphery at least 5mm.
10. filtering face-piece respirator according to claim 7, wherein said first fixed part and described second fixed part comprise welding region separately.
11. filtering face-piece respirators according to claim 7, described mask body has the line of demarcation described mask body being divided into top section and base section, and described laterally extending province seam is arranged in described top section.
12. filtering face-piece respirators according to claim 11, described filtering face-piece respirator also comprises the second laterally extending province seam being arranged in described base section.
13. 1 kinds of methods preparing cup-shaped filtering face-piece respirator, described method comprises:
A () forms flat face shield by having the filtration extending to the pleats of the second side from the first side;
B described flat face shield launches with the cup-shaped face shield of forming section by () at least in part, wherein said pleat portion ground launches; And
C () every side be close in described first side and described second side forms the fixed part of the pleats launched across described part to lock described pleats, thus form province's seam.
14. methods according to claim 13, the pleats that the distance that the step of wherein said formation fixed part is included at least 5mm apart from every side is launched across described part form fixed part.
15. methods according to claim 13, the step of wherein said formation fixed part comprises across three layer filtration structure formation fixed part.
16. methods according to claim 13, wherein said flat face shield is also included in the first flange of described first side and the second flange in described second side, and described pleats extend to described second flange from described first flange.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/013,314 | 2013-08-29 | ||
| US14/013,314 US9603395B2 (en) | 2013-08-29 | 2013-08-29 | Filtering face-piece respirator having darted mask body |
| PCT/US2014/051072 WO2015031066A2 (en) | 2013-08-29 | 2014-08-14 | Filtering face-piece respirator having darted mask body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105473192A true CN105473192A (en) | 2016-04-06 |
| CN105473192B CN105473192B (en) | 2019-09-06 |
Family
ID=51453863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480046721.4A Active CN105473192B (en) | 2013-08-29 | 2014-08-14 | Filtering face-piece respirator with the mask body for saving seam |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US9603395B2 (en) |
| EP (1) | EP3038717A2 (en) |
| JP (1) | JP2016529415A (en) |
| KR (1) | KR20160048181A (en) |
| CN (1) | CN105473192B (en) |
| AU (1) | AU2014311610B2 (en) |
| CA (1) | CA2921551A1 (en) |
| RU (1) | RU2638629C2 (en) |
| WO (1) | WO2015031066A2 (en) |
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| CN111542361A (en) * | 2018-01-03 | 2020-08-14 | 3M创新有限公司 | Respirator including laterally extending pleats and method of forming same |
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| CN111542361B (en) * | 2018-01-03 | 2024-03-08 | 3M创新有限公司 | Respirator that includes transversely extending pleats and method of forming the same |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2638629C2 (en) | 2017-12-14 |
| AU2014311610B2 (en) | 2017-03-02 |
| US20150059772A1 (en) | 2015-03-05 |
| US9603395B2 (en) | 2017-03-28 |
| WO2015031066A2 (en) | 2015-03-05 |
| EP3038717A2 (en) | 2016-07-06 |
| RU2016106595A (en) | 2017-10-04 |
| US20160338428A1 (en) | 2016-11-24 |
| WO2015031066A3 (en) | 2015-06-25 |
| KR20160048181A (en) | 2016-05-03 |
| CA2921551A1 (en) | 2015-03-05 |
| AU2014311610A1 (en) | 2016-03-10 |
| JP2016529415A (en) | 2016-09-23 |
| US10238158B2 (en) | 2019-03-26 |
| CN105473192B (en) | 2019-09-06 |
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